154 



Fig. 16. Atteva aurea {Yponomeutidae). Metathorax. To show the thoracic 



setae of a typical Micro. After St. B. Fracker (1915, PI. V, fig. 36). 

 » 17. Feltia glandaria (Nocluidae). Instar /. 6th abdominal segment. 



Marked according to St. B. Fracker's system (1915, Pi. IV, fig. 29). 



Note seta p in this figure and in figure 15. 

 » 18. Mesothoracic and raetathoracic scheme, according to my view. 



Type II. Note the wing-rudiment. 

 » 19. The primary setae on a typical abdominal segment. Type I. 

 » 20. Type la, the usual arrangement of the Saturniidae. 

 » 21. Type 16, the armature of some Lymantridae. 



For fig. 18, 19, 20, 21 see Chapter V, p. 42 sqq. 



» 22. Hepialus hectus Linn. Instar i, dorsal aspect, 



» 23. » » » » », lateral aspect. 



» 24, » » » » », ventral aspect. 



» 25. Hepialus of. lupulinus Linn. Instar F, lateral aspect. Compare lig. 4 



and 14. 

 » 26. Zeuzera pyrina Linn. (Cossidae), mature larva. Coll. Kall. Pro-, 

 meso- and metathorax, and abd. 1, 2, 3, lateral aspect. 

 » 27. » » Pro-, meso- and metathorax, abd. 1, dorsal aspect. 



PLATE II. 



» 1. Bombyx mori. Instar/, newly hatched, dorsal aspect. 

 » 2. » » » » » » lateral aspect. 



» 3. » » » » just before moulting, lateral aspect. 



» 4. » » » II, just after moulting » •» 



Mark the numerous secondary setae. 

 » 5. » » Abdominal segment 5 of mature larva. 



Obsei've the primary verrucae between the secondary setae. 

 » K)a, b. Lasiocatnpa riibi {Lasiocampidae). Prothorax, mesothorax and 



abd. segment 5 of Instar HI. 

 » 1. » » Abdominal segment 5 of mature larva. 



» 8. Ocneria dispar (Liparidae). Instar i, dorsal aspect. 



» 9. » » » » » lateral aspect. 



» 10. » » » » » the curious setae, which dis- 



appear after moulting. 



» 11a, 6. » » » mature larva. Prothorax and 5th ab- 



dominal segment (see Type I b, 

 Plate I, fig. 21). 



» 12. Porlhesia chrysorrhoca {Liparidae) Instar i, dorsal aspect. 



»13. » » » »» lateral aspect. 



» 14. » » » mature larva. Pro- and mesothorax. 



» 15. » » » » » 6th abdominal segment. 



